Plotting of a rolling ball

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Cem Eren Aslan
Cem Eren Aslan 2024-5-24
编辑： VBBV 2024-5-24
Hi all,
I have data as below. First column is time column. The second column is x values and the third column is y values. I want to plot this data.The data shows that a round ball is at the x and y location at given time. This ball seems to be shifting/rolling. How can I plot this movement of the ball? The data is as follows.
Thanks.
0 0 0
0.00500000000000000 -1.99184823748972e-07 1.05798917365090e-13
0.0100000000000000 -9.95522559684969e-07 2.64284044491124e-12
0.0150000000000000 -2.70844960991857e-06 1.95618647719148e-11
0.0200000000000000 -5.57897138597691e-06 8.29997912681309e-11
0.0250000000000000 -9.72602113360498e-06 2.52254632243548e-10
0.0300000000000000 -1.52681885391364e-05 6.21646883377640e-10
0.0350000000000000 -2.24451354098218e-05 1.34342427617396e-09
0.0400000000000000 -3.12528324201816e-05 2.60463875809055e-09
0.0450000000000000 -4.14440486717297e-05 4.58029112081254e-09
0.0500000000000000 -5.27718390114465e-05 7.42631198040007e-09
0.0550000000000000 -6.49895772581970e-05 1.12630537391977e-08
0.0600000000000000 -7.79724695483816e-05 1.62125493532621e-08
0.0650000000000000 -9.15958589238721e-05 2.23728036586717e-08
0.0700000000000000 -0.000105613752470057 2.97447058954838e-08
0.0750000000000000 -0.000119902041788388 3.83373323333985e-08

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采纳的回答

VBBV
VBBV 2024-5-24
编辑：VBBV 2024-5-24
@Cem Eren Aslan, you can use plot function handle and delete it at end of every iteration inside the loop,
data = [0 0 0
0.00500000000000000 -1.99184823748972e-07 1.05798917365090e-13
0.0100000000000000 -9.95522559684969e-07 2.64284044491124e-12
0.0150000000000000 -2.70844960991857e-06 1.95618647719148e-11
0.0200000000000000 -5.57897138597691e-06 8.29997912681309e-11
0.0250000000000000 -9.72602113360498e-06 2.52254632243548e-10
0.0300000000000000 -1.52681885391364e-05 6.21646883377640e-10
0.0350000000000000 -2.24451354098218e-05 1.34342427617396e-09
0.0400000000000000 -3.12528324201816e-05 2.60463875809055e-09
0.0450000000000000 -4.14440486717297e-05 4.58029112081254e-09
0.0500000000000000 -5.27718390114465e-05 7.42631198040007e-09
0.0550000000000000 -6.49895772581970e-05 1.12630537391977e-08
0.0600000000000000 -7.79724695483816e-05 1.62125493532621e-08
0.0650000000000000 -9.15958589238721e-05 2.23728036586717e-08
0.0700000000000000 -0.000105613752470057 2.97447058954838e-08
0.0750000000000000 -0.000119902041788388 3.83373323333985e-08];
t = data(:,1);
x = data(:,2);
y = data(:,3);
for k = 1:numel(x)
h=plot(x(k), y(k), 'bo', 'MarkerFaceColor', 'b');
pause(2);
delete(h); % deletes the previous location /position of ball in figure
end

更多回答（1 个）

Animesh
Animesh 2024-5-24
Hi @Cem Eren Aslan,
You can use the plot function in MATLAB for simple visualization of the given 2D trajectory.
You can refer the following MATLAB Documention for more information on plot function: www.mathworks.com/help/matlab/ref/plot.html
Moreover, to visualize the movement over time you can use the loop to draw the position of ball at each time step. You can do something like this to visualize the movement:
for i = 1:length(x)
plot(x(i), y(i), 'ro', 'MarkerFaceColor', 'r');
pause(0.1); % Adjust the speed of animation by changing the pause duration
end
  1 个评论
Cem Eren Aslan
Cem Eren Aslan 2024-5-24
First of all, thank you for your answer. The code is worked but all points where the ball passes are visible. How can I make it appear only in the current time period? For example, in the 2nd second, I do not want to see the place where it was seen in the 1st second. How can I do that? I drop a screenshot about result below.

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